加密/解密

最新推荐文章于 2021-02-16 22:33:39 发布

原创最新推荐文章于 2021-02-16 22:33:39 发布 · 954 阅读

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#加密 #string #byte #解密

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本文详细介绍了使用优快云作为密钥进行DES加密与解密的方法，包括加密函数与解密函数的实现过程及代码示例。

        /// <summary>
        /// 加密
        /// </summary>
        /// <param name="str">加密前字符</param>
        /// <returns>加密后密文</returns>
        public String JiaMi(String str)
        {
            String encryptKey = "优快云";
            DESCryptoServiceProvider descsp = new DESCryptoServiceProvider();
            byte[] key = Encoding.Unicode.GetBytes(encryptKey);
            byte[] data = Encoding.Unicode.GetBytes(str);
            System.IO.MemoryStream MStream = new System.IO.MemoryStream();
            CryptoStream CStream = new CryptoStream(MStream, descsp.CreateEncryptor(key, key), CryptoStreamMode.Write);
            CStream.Write(data, 0, data.Length);
            CStream.FlushFinalBlock();
            return Convert.ToBase64String(MStream.ToArray());
        }

        /// <summary>
        /// 解密
        /// </summary>
        /// <param name="str">加密过的密文</param>
        /// <returns></returns>
        public String JieMi(String str)
        {
            String encryptKey = "优快云";
            DESCryptoServiceProvider descsp = new DESCryptoServiceProvider();
            byte[] key = Encoding.Unicode.GetBytes(encryptKey);
            byte[] data = Convert.FromBase64String(str);
            System.IO.MemoryStream MStream = new System.IO.MemoryStream();
            CryptoStream CStream = new CryptoStream(MStream, descsp.CreateDecryptor(key, key), CryptoStreamMode.Write);
            CStream.Write(data, 0, data.Length);
            CStream.FlushFinalBlock();
            return Encoding.Unicode.GetString(MStream.ToArray());
        }